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doc: add `added:` information for crypto 

Ref: https://github.com/nodejs/node/pull/8885

PR-URL: https://github.com/nodejs/node/pull/8281
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
v4.x
Luigi Pinca 8 years ago
committed by Myles Borins
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6effc4aadc
1 changed files with 209 additions and 0 deletions
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  1. 209
      doc/api/crypto.md

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doc/api/crypto.md
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@ -20,6 +20,9 @@ console.log(hash);
``` ```
## Class: Certificate ## Class: Certificate
<!-- YAML
added: v0.11.8
-->
SPKAC is a Certificate Signing Request mechanism originally implemented by SPKAC is a Certificate Signing Request mechanism originally implemented by
Netscape and now specified formally as part of [HTML5's `keygen` element][]. Netscape and now specified formally as part of [HTML5's `keygen` element][].
@ -41,6 +44,9 @@ const cert2 = crypto.Certificate();
``` ```
### certificate.exportChallenge(spkac) ### certificate.exportChallenge(spkac)
<!-- YAML
added: v0.11.8
-->
The `spkac` data structure includes a public key and a challenge. The The `spkac` data structure includes a public key and a challenge. The
`certificate.exportChallenge()` returns the challenge component in the `certificate.exportChallenge()` returns the challenge component in the
@ -56,6 +62,9 @@ console.log(challenge.toString('utf8'));
``` ```
### certificate.exportPublicKey(spkac) ### certificate.exportPublicKey(spkac)
<!-- YAML
added: v0.11.8
-->
The `spkac` data structure includes a public key and a challenge. The The `spkac` data structure includes a public key and a challenge. The
`certificate.exportPublicKey()` returns the public key component in the `certificate.exportPublicKey()` returns the public key component in the
@ -71,6 +80,9 @@ console.log(publicKey);
``` ```
### certificate.verifySpkac(spkac) ### certificate.verifySpkac(spkac)
<!-- YAML
added: v0.11.8
-->
Returns `true` if the given `spkac` data structure is valid, `false` otherwise. Returns `true` if the given `spkac` data structure is valid, `false` otherwise.
The `spkac` argument must be a Node.js [`Buffer`][]. The `spkac` argument must be a Node.js [`Buffer`][].
@ -83,6 +95,9 @@ console.log(cert.verifySpkac(new Buffer(spkac)));
``` ```
## Class: Cipher ## Class: Cipher
<!-- YAML
added: v0.1.94
-->
Instances of the `Cipher` class are used to encrypt data. The class can be Instances of the `Cipher` class are used to encrypt data. The class can be
used in one of two ways: used in one of two ways:
@ -143,6 +158,9 @@ console.log(encrypted);
``` ```
### cipher.final([output_encoding]) ### cipher.final([output_encoding])
<!-- YAML
added: v0.1.94
-->
Returns any remaining enciphered contents. If `output_encoding` Returns any remaining enciphered contents. If `output_encoding`
parameter is one of `'binary'`, `'base64'` or `'hex'`, a string is returned. parameter is one of `'binary'`, `'base64'` or `'hex'`, a string is returned.
@ -153,12 +171,18 @@ longer be used to encrypt data. Attempts to call `cipher.final()` more than
once will result in an error being thrown. once will result in an error being thrown.
### cipher.setAAD(buffer) ### cipher.setAAD(buffer)
<!-- YAML
added: v1.0.0
-->
When using an authenticated encryption mode (only `GCM` is currently When using an authenticated encryption mode (only `GCM` is currently
supported), the `cipher.setAAD()` method sets the value used for the supported), the `cipher.setAAD()` method sets the value used for the
_additional authenticated data_ (AAD) input parameter. _additional authenticated data_ (AAD) input parameter.
### cipher.getAuthTag() ### cipher.getAuthTag()
<!-- YAML
added: v1.0.0
-->
When using an authenticated encryption mode (only `GCM` is currently When using an authenticated encryption mode (only `GCM` is currently
supported), the `cipher.getAuthTag()` method returns a [`Buffer`][] containing supported), the `cipher.getAuthTag()` method returns a [`Buffer`][] containing
@ -168,6 +192,9 @@ The `cipher.getAuthTag()` method should only be called after encryption has
been completed using the [`cipher.final()`][] method. been completed using the [`cipher.final()`][] method.
### cipher.setAutoPadding(auto_padding=true) ### cipher.setAutoPadding(auto_padding=true)
<!-- YAML
added: v0.7.1
-->
When using block encryption algorithms, the `Cipher` class will automatically When using block encryption algorithms, the `Cipher` class will automatically
add padding to the input data to the appropriate block size. To disable the add padding to the input data to the appropriate block size. To disable the
@ -181,6 +208,9 @@ using `0x0` instead of PKCS padding.
The `cipher.setAutoPadding()` method must be called before [`cipher.final()`][]. The `cipher.setAutoPadding()` method must be called before [`cipher.final()`][].
### cipher.update(data[, input_encoding][, output_encoding]) ### cipher.update(data[, input_encoding][, output_encoding])
<!-- YAML
added: v0.1.94
-->
Updates the cipher with `data`. If the `input_encoding` argument is given, Updates the cipher with `data`. If the `input_encoding` argument is given,
it's value must be one of `'utf8'`, `'ascii'`, or `'binary'` and the `data` it's value must be one of `'utf8'`, `'ascii'`, or `'binary'` and the `data`
@ -198,6 +228,9 @@ The `cipher.update()` method can be called multiple times with new data until
[`cipher.final()`][] will result in an error being thrown. [`cipher.final()`][] will result in an error being thrown.
## Class: Decipher ## Class: Decipher
<!-- YAML
added: v0.1.94
-->
Instances of the `Decipher` class are used to decrypt data. The class can be Instances of the `Decipher` class are used to decrypt data. The class can be
used in one of two ways: used in one of two ways:
@ -260,6 +293,9 @@ console.log(decrypted);
``` ```
### decipher.final([output_encoding]) ### decipher.final([output_encoding])
<!-- YAML
added: v0.1.94
-->
Returns any remaining deciphered contents. If `output_encoding` Returns any remaining deciphered contents. If `output_encoding`
parameter is one of `'binary'`, `'base64'` or `'hex'`, a string is returned. parameter is one of `'binary'`, `'base64'` or `'hex'`, a string is returned.
@ -270,12 +306,18 @@ no longer be used to decrypt data. Attempts to call `decipher.final()` more
than once will result in an error being thrown. than once will result in an error being thrown.
### decipher.setAAD(buffer) ### decipher.setAAD(buffer)
<!-- YAML
added: v1.0.0
-->
When using an authenticated encryption mode (only `GCM` is currently When using an authenticated encryption mode (only `GCM` is currently
supported), the `cipher.setAAD()` method sets the value used for the supported), the `cipher.setAAD()` method sets the value used for the
_additional authenticated data_ (AAD) input parameter. _additional authenticated data_ (AAD) input parameter.
### decipher.setAuthTag(buffer) ### decipher.setAuthTag(buffer)
<!-- YAML
added: v1.0.0
-->
When using an authenticated encryption mode (only `GCM` is currently When using an authenticated encryption mode (only `GCM` is currently
supported), the `decipher.setAuthTag()` method is used to pass in the supported), the `decipher.setAuthTag()` method is used to pass in the
@ -284,6 +326,9 @@ has been tampered with, [`decipher.final()`][] with throw, indicating that the
cipher text should be discarded due to failed authentication. cipher text should be discarded due to failed authentication.
### decipher.setAutoPadding(auto_padding=true) ### decipher.setAutoPadding(auto_padding=true)
<!-- YAML
added: v0.7.1
-->
When data has been encrypted without standard block padding, calling When data has been encrypted without standard block padding, calling
`decipher.setAutoPadding(false)` will disable automatic padding to prevent `decipher.setAutoPadding(false)` will disable automatic padding to prevent
@ -296,6 +341,9 @@ The `decipher.setAutoPadding()` method must be called before
[`decipher.update()`][]. [`decipher.update()`][].
### decipher.update(data[, input_encoding][, output_encoding]) ### decipher.update(data[, input_encoding][, output_encoding])
<!-- YAML
added: v0.1.94
-->
Updates the decipher with `data`. If the `input_encoding` argument is given, Updates the decipher with `data`. If the `input_encoding` argument is given,
it's value must be one of `'binary'`, `'base64'`, or `'hex'` and the `data` it's value must be one of `'binary'`, `'base64'`, or `'hex'` and the `data`
@ -313,6 +361,9 @@ The `decipher.update()` method can be called multiple times with new data until
[`decipher.final()`][] will result in an error being thrown. [`decipher.final()`][] will result in an error being thrown.
## Class: DiffieHellman ## Class: DiffieHellman
<!-- YAML
added: v0.5.0
-->
The `DiffieHellman` class is a utility for creating Diffie-Hellman key The `DiffieHellman` class is a utility for creating Diffie-Hellman key
exchanges. exchanges.
@ -341,6 +392,9 @@ assert.equal(alice_secret.toString('hex'), bob_secret.toString('hex'));
``` ```
### diffieHellman.computeSecret(other_public_key[, input_encoding][, output_encoding]) ### diffieHellman.computeSecret(other_public_key[, input_encoding][, output_encoding])
<!-- YAML
added: v0.5.0
-->
Computes the shared secret using `other_public_key` as the other Computes the shared secret using `other_public_key` as the other
party's public key and returns the computed shared secret. The supplied party's public key and returns the computed shared secret. The supplied
@ -353,6 +407,9 @@ If `output_encoding` is given a string is returned; otherwise, a
[`Buffer`][] is returned. [`Buffer`][] is returned.
### diffieHellman.generateKeys([encoding]) ### diffieHellman.generateKeys([encoding])
<!-- YAML
added: v0.5.0
-->
Generates private and public Diffie-Hellman key values, and returns Generates private and public Diffie-Hellman key values, and returns
the public key in the specified `encoding`. This key should be the public key in the specified `encoding`. This key should be
@ -361,30 +418,45 @@ or `'base64'`. If `encoding` is provided a string is returned; otherwise a
[`Buffer`][] is returned. [`Buffer`][] is returned.
### diffieHellman.getGenerator([encoding]) ### diffieHellman.getGenerator([encoding])
<!-- YAML
added: v0.5.0
-->
Returns the Diffie-Hellman generator in the specified `encoding`, which can Returns the Diffie-Hellman generator in the specified `encoding`, which can
be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a string is be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a string is
returned; otherwise a [`Buffer`][] is returned. returned; otherwise a [`Buffer`][] is returned.
### diffieHellman.getPrime([encoding]) ### diffieHellman.getPrime([encoding])
<!-- YAML
added: v0.5.0
-->
Returns the Diffie-Hellman prime in the specified `encoding`, which can Returns the Diffie-Hellman prime in the specified `encoding`, which can
be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a string is be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a string is
returned; otherwise a [`Buffer`][] is returned. returned; otherwise a [`Buffer`][] is returned.
### diffieHellman.getPrivateKey([encoding]) ### diffieHellman.getPrivateKey([encoding])
<!-- YAML
added: v0.5.0
-->
Returns the Diffie-Hellman private key in the specified `encoding`, Returns the Diffie-Hellman private key in the specified `encoding`,
which can be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a which can be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a
string is returned; otherwise a [`Buffer`][] is returned. string is returned; otherwise a [`Buffer`][] is returned.
### diffieHellman.getPublicKey([encoding]) ### diffieHellman.getPublicKey([encoding])
<!-- YAML
added: v0.5.0
-->
Returns the Diffie-Hellman public key in the specified `encoding`, which Returns the Diffie-Hellman public key in the specified `encoding`, which
can be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a can be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided a
string is returned; otherwise a [`Buffer`][] is returned. string is returned; otherwise a [`Buffer`][] is returned.
### diffieHellman.setPrivateKey(private_key[, encoding]) ### diffieHellman.setPrivateKey(private_key[, encoding])
<!-- YAML
added: v0.5.0
-->
Sets the Diffie-Hellman private key. If the `encoding` argument is provided Sets the Diffie-Hellman private key. If the `encoding` argument is provided
and is either `'binary'`, `'hex'`, or `'base64'`, `private_key` is expected and is either `'binary'`, `'hex'`, or `'base64'`, `private_key` is expected
@ -392,6 +464,9 @@ to be a string. If no `encoding` is provided, `private_key` is expected
to be a [`Buffer`][]. to be a [`Buffer`][].
### diffieHellman.setPublicKey(public_key[, encoding]) ### diffieHellman.setPublicKey(public_key[, encoding])
<!-- YAML
added: v0.5.0
-->
Sets the Diffie-Hellman public key. If the `encoding` argument is provided Sets the Diffie-Hellman public key. If the `encoding` argument is provided
and is either `'binary'`, `'hex'` or `'base64'`, `public_key` is expected and is either `'binary'`, `'hex'` or `'base64'`, `public_key` is expected
@ -399,6 +474,9 @@ to be a string. If no `encoding` is provided, `public_key` is expected
to be a [`Buffer`][]. to be a [`Buffer`][].
### diffieHellman.verifyError ### diffieHellman.verifyError
<!-- YAML
added: v0.11.12
-->
A bit field containing any warnings and/or errors resulting from a check A bit field containing any warnings and/or errors resulting from a check
performed during initialization of the `DiffieHellman` object. performed during initialization of the `DiffieHellman` object.
@ -412,6 +490,9 @@ module):
* `DH_NOT_SUITABLE_GENERATOR` * `DH_NOT_SUITABLE_GENERATOR`
## Class: ECDH ## Class: ECDH
<!-- YAML
added: v0.11.14
-->
The `ECDH` class is a utility for creating Elliptic Curve Diffie-Hellman (ECDH) The `ECDH` class is a utility for creating Elliptic Curve Diffie-Hellman (ECDH)
key exchanges. key exchanges.
@ -440,6 +521,9 @@ assert(alice_secret, bob_secret);
``` ```
### ecdh.computeSecret(other_public_key[, input_encoding][, output_encoding]) ### ecdh.computeSecret(other_public_key[, input_encoding][, output_encoding])
<!-- YAML
added: v0.11.14
-->
Computes the shared secret using `other_public_key` as the other Computes the shared secret using `other_public_key` as the other
party's public key and returns the computed shared secret. The supplied party's public key and returns the computed shared secret. The supplied
@ -452,6 +536,9 @@ If `output_encoding` is given a string will be returned; otherwise a
[`Buffer`][] is returned. [`Buffer`][] is returned.
### ecdh.generateKeys([encoding[, format]]) ### ecdh.generateKeys([encoding[, format]])
<!-- YAML
added: v0.11.14
-->
Generates private and public EC Diffie-Hellman key values, and returns Generates private and public EC Diffie-Hellman key values, and returns
the public key in the specified `format` and `encoding`. This key should be the public key in the specified `format` and `encoding`. This key should be
@ -466,12 +553,18 @@ The `encoding` argument can be `'binary'`, `'hex'`, or `'base64'`. If
is returned. is returned.
### ecdh.getPrivateKey([encoding]) ### ecdh.getPrivateKey([encoding])
<!-- YAML
added: v0.11.14
-->
Returns the EC Diffie-Hellman private key in the specified `encoding`, Returns the EC Diffie-Hellman private key in the specified `encoding`,
which can be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided which can be `'binary'`, `'hex'`, or `'base64'`. If `encoding` is provided
a string is returned; otherwise a [`Buffer`][] is returned. a string is returned; otherwise a [`Buffer`][] is returned.
### ecdh.getPublicKey([encoding[, format]]) ### ecdh.getPublicKey([encoding[, format]])
<!-- YAML
added: v0.11.14
-->
Returns the EC Diffie-Hellman public key in the specified `encoding` and Returns the EC Diffie-Hellman public key in the specified `encoding` and
`format`. `format`.
@ -485,6 +578,9 @@ The `encoding` argument can be `'binary'`, `'hex'`, or `'base64'`. If
returned. returned.
### ecdh.setPrivateKey(private_key[, encoding]) ### ecdh.setPrivateKey(private_key[, encoding])
<!-- YAML
added: v0.11.14
-->
Sets the EC Diffie-Hellman private key. The `encoding` can be `'binary'`, Sets the EC Diffie-Hellman private key. The `encoding` can be `'binary'`,
`'hex'` or `'base64'`. If `encoding` is provided, `private_key` is expected `'hex'` or `'base64'`. If `encoding` is provided, `private_key` is expected
@ -494,6 +590,10 @@ created, an error is thrown. Upon setting the private key, the associated
public point (key) is also generated and set in the ECDH object. public point (key) is also generated and set in the ECDH object.
### ecdh.setPublicKey(public_key[, encoding]) ### ecdh.setPublicKey(public_key[, encoding])
<!-- YAML
added: v0.11.14
deprecated: v5.2.0
-->
> Stability: 0 - Deprecated > Stability: 0 - Deprecated
@ -533,6 +633,9 @@ console.log(alice_secret === bob_secret);
``` ```
## Class: Hash ## Class: Hash
<!-- YAML
added: v0.1.92
-->
The `Hash` class is a utility for creating hash digests of data. It can be The `Hash` class is a utility for creating hash digests of data. It can be
used in one of two ways: used in one of two ways:
@ -587,6 +690,9 @@ console.log(hash.digest('hex'));
``` ```
### hash.digest([encoding]) ### hash.digest([encoding])
<!-- YAML
added: v0.1.92
-->
Calculates the digest of all of the data passed to be hashed (using the Calculates the digest of all of the data passed to be hashed (using the
[`hash.update()`][] method). The `encoding` can be `'hex'`, `'binary'` or [`hash.update()`][] method). The `encoding` can be `'hex'`, `'binary'` or
@ -597,6 +703,9 @@ The `Hash` object can not be used again after `hash.digest()` method has been
called. Multiple calls will cause an error to be thrown. called. Multiple calls will cause an error to be thrown.
### hash.update(data[, input_encoding]) ### hash.update(data[, input_encoding])
<!-- YAML
added: v0.1.92
-->
Updates the hash content with the given `data`, the encoding of which Updates the hash content with the given `data`, the encoding of which
is given in `input_encoding` and can be `'utf8'`, `'ascii'` or is given in `input_encoding` and can be `'utf8'`, `'ascii'` or
@ -607,6 +716,9 @@ encoding of `'binary'` is enforced. If `data` is a [`Buffer`][] then
This can be called many times with new data as it is streamed. This can be called many times with new data as it is streamed.
## Class: Hmac ## Class: Hmac
<!-- YAML
added: v0.1.94
-->
The `Hmac` Class is a utility for creating cryptographic HMAC digests. It can The `Hmac` Class is a utility for creating cryptographic HMAC digests. It can
be used in one of two ways: be used in one of two ways:
@ -661,6 +773,9 @@ console.log(hmac.digest('hex'));
``` ```
### hmac.digest([encoding]) ### hmac.digest([encoding])
<!-- YAML
added: v0.1.94
-->
Calculates the HMAC digest of all of the data passed using [`hmac.update()`][]. Calculates the HMAC digest of all of the data passed using [`hmac.update()`][].
The `encoding` can be `'hex'`, `'binary'` or `'base64'`. If `encoding` is The `encoding` can be `'hex'`, `'binary'` or `'base64'`. If `encoding` is
@ -670,6 +785,9 @@ The `Hmac` object can not be used again after `hmac.digest()` has been
called. Multiple calls to `hmac.digest()` will result in an error being thrown. called. Multiple calls to `hmac.digest()` will result in an error being thrown.
### hmac.update(data[, input_encoding]) ### hmac.update(data[, input_encoding])
<!-- YAML
added: v0.1.94
-->
Updates the `Hmac` content with the given `data`, the encoding of which Updates the `Hmac` content with the given `data`, the encoding of which
is given in `input_encoding` and can be `'utf8'`, `'ascii'` or is given in `input_encoding` and can be `'utf8'`, `'ascii'` or
@ -680,6 +798,9 @@ encoding of `'utf8'` is enforced. If `data` is a [`Buffer`][] then
This can be called many times with new data as it is streamed. This can be called many times with new data as it is streamed.
## Class: Sign ## Class: Sign
<!-- YAML
added: v0.1.92
-->
The `Sign` Class is a utility for generating signatures. It can be used in one The `Sign` Class is a utility for generating signatures. It can be used in one
of two ways: of two ways:
@ -742,6 +863,9 @@ console.log(sign.sign(private_key).toString('hex'));
``` ```
### sign.sign(private_key[, output_format]) ### sign.sign(private_key[, output_format])
<!-- YAML
added: v0.1.92
-->
Calculates the signature on all the data passed through using either Calculates the signature on all the data passed through using either
[`sign.update()`][] or [`sign.write()`][stream-writable-write]. [`sign.update()`][] or [`sign.write()`][stream-writable-write].
@ -761,6 +885,9 @@ The `Sign` object can not be again used after `sign.sign()` method has been
called. Multiple calls to `sign.sign()` will result in an error being thrown. called. Multiple calls to `sign.sign()` will result in an error being thrown.
### sign.update(data[, input_encoding]) ### sign.update(data[, input_encoding])
<!-- YAML
added: v0.1.92
-->
Updates the `Sign` content with the given `data`, the encoding of which Updates the `Sign` content with the given `data`, the encoding of which
is given in `input_encoding` and can be `'utf8'`, `'ascii'` or is given in `input_encoding` and can be `'utf8'`, `'ascii'` or
@ -771,6 +898,9 @@ encoding of `'utf8'` is enforced. If `data` is a [`Buffer`][] then
This can be called many times with new data as it is streamed. This can be called many times with new data as it is streamed.
## Class: Verify ## Class: Verify
<!-- YAML
added: v0.1.92
-->
The `Verify` class is a utility for verifying signatures. It can be used in one The `Verify` class is a utility for verifying signatures. It can be used in one
of two ways: of two ways:
@ -813,6 +943,9 @@ console.log(verify.verify(public_key, signature));
``` ```
### verifier.update(data[, input_encoding]) ### verifier.update(data[, input_encoding])
<!-- YAML
added: v0.1.92
-->
Updates the `Verify` content with the given `data`, the encoding of which Updates the `Verify` content with the given `data`, the encoding of which
is given in `input_encoding` and can be `'utf8'`, `'ascii'` or is given in `input_encoding` and can be `'utf8'`, `'ascii'` or
@ -823,6 +956,9 @@ encoding of `'utf8'` is enforced. If `data` is a [`Buffer`][] then
This can be called many times with new data as it is streamed. This can be called many times with new data as it is streamed.
### verifier.verify(object, signature[, signature_format]) ### verifier.verify(object, signature[, signature_format])
<!-- YAML
added: v0.1.92
-->
Verifies the provided data using the given `object` and `signature`. Verifies the provided data using the given `object` and `signature`.
The `object` argument is a string containing a PEM encoded object, which can be The `object` argument is a string containing a PEM encoded object, which can be
@ -842,6 +978,9 @@ thrown.
## `crypto` module methods and properties ## `crypto` module methods and properties
### crypto.DEFAULT_ENCODING ### crypto.DEFAULT_ENCODING
<!-- YAML
added: v0.9.3
-->
The default encoding to use for functions that can take either strings The default encoding to use for functions that can take either strings
or [buffers][`Buffer`]. The default value is `'buffer'`, which makes methods or [buffers][`Buffer`]. The default value is `'buffer'`, which makes methods
@ -854,6 +993,9 @@ New applications should expect the default to be `'buffer'`. This property may
become deprecated in a future Node.js release. become deprecated in a future Node.js release.
### crypto.createCipher(algorithm, password) ### crypto.createCipher(algorithm, password)
<!-- YAML
added: v0.1.94
-->
Creates and returns a `Cipher` object that uses the given `algorithm` and Creates and returns a `Cipher` object that uses the given `algorithm` and
`password`. `password`.
@ -891,6 +1033,10 @@ The `key` is the raw key used by the `algorithm` and `iv` is an
[buffers][`Buffer`]. [buffers][`Buffer`].
### crypto.createCredentials(details) ### crypto.createCredentials(details)
<!-- YAML
added: v0.1.92
deprecated: v0.11.13
-->
> Stability: 0 - Deprecated: Use [`tls.createSecureContext()`][] instead. > Stability: 0 - Deprecated: Use [`tls.createSecureContext()`][] instead.
@ -916,6 +1062,9 @@ If no 'ca' details are given, Node.js will use Mozilla's default
[publicly trusted list of CAs][]. [publicly trusted list of CAs][].
### crypto.createDecipher(algorithm, password) ### crypto.createDecipher(algorithm, password)
<!-- YAML
added: v0.1.94
-->
Creates and returns a `Decipher` object that uses the given `algorithm` and Creates and returns a `Decipher` object that uses the given `algorithm` and
`password` (key). `password` (key).
@ -933,6 +1082,9 @@ their own using [`crypto.pbkdf2()`][] and to use [`crypto.createDecipheriv()`][]
to create the `Decipher` object. to create the `Decipher` object.
### crypto.createDecipheriv(algorithm, key, iv) ### crypto.createDecipheriv(algorithm, key, iv)
<!-- YAML
added: v0.1.94
-->
Creates and returns a `Decipher` object that uses the given `algorithm`, `key` Creates and returns a `Decipher` object that uses the given `algorithm`, `key`
and initialization vector (`iv`). and initialization vector (`iv`).
@ -946,6 +1098,9 @@ The `key` is the raw key used by the `algorithm` and `iv` is an
[buffers][`Buffer`]. [buffers][`Buffer`].
### crypto.createDiffieHellman(prime[, prime_encoding][, generator][, generator_encoding]) ### crypto.createDiffieHellman(prime[, prime_encoding][, generator][, generator_encoding])
<!-- YAML
added: v0.11.12
-->
Creates a `DiffieHellman` key exchange object using the supplied `prime` and an Creates a `DiffieHellman` key exchange object using the supplied `prime` and an
optional specific `generator`. optional specific `generator`.
@ -963,12 +1118,18 @@ If `generator_encoding` is specified, `generator` is expected to be a string;
otherwise either a number or [`Buffer`][] is expected. otherwise either a number or [`Buffer`][] is expected.
### crypto.createDiffieHellman(prime_length[, generator]) ### crypto.createDiffieHellman(prime_length[, generator])
<!-- YAML
added: v0.5.0
-->
Creates a `DiffieHellman` key exchange object and generates a prime of Creates a `DiffieHellman` key exchange object and generates a prime of
`prime_length` bits using an optional specific numeric `generator`. `prime_length` bits using an optional specific numeric `generator`.
If `generator` is not specified, the value `2` is used. If `generator` is not specified, the value `2` is used.
### crypto.createECDH(curve_name) ### crypto.createECDH(curve_name)
<!-- YAML
added: v0.11.14
-->
Creates an Elliptic Curve Diffie-Hellman (`ECDH`) key exchange object using a Creates an Elliptic Curve Diffie-Hellman (`ECDH`) key exchange object using a
predefined curve specified by the `curve_name` string. Use predefined curve specified by the `curve_name` string. Use
@ -977,6 +1138,9 @@ OpenSSL releases, `openssl ecparam -list_curves` will also display the name
and description of each available elliptic curve. and description of each available elliptic curve.
### crypto.createHash(algorithm) ### crypto.createHash(algorithm)
<!-- YAML
added: v0.1.92
-->
Creates and returns a `Hash` object that can be used to generate hash digests Creates and returns a `Hash` object that can be used to generate hash digests
using the given `algorithm`. using the given `algorithm`.
@ -1007,6 +1171,9 @@ input.on('readable', () => {
``` ```
### crypto.createHmac(algorithm, key) ### crypto.createHmac(algorithm, key)
<!-- YAML
added: v0.1.94
-->
Creates and returns an `Hmac` object that uses the given `algorithm` and `key`. Creates and returns an `Hmac` object that uses the given `algorithm` and `key`.
@ -1038,18 +1205,27 @@ input.on('readable', () => {
``` ```
### crypto.createSign(algorithm) ### crypto.createSign(algorithm)
<!-- YAML
added: v0.1.92
-->
Creates and returns a `Sign` object that uses the given `algorithm`. On Creates and returns a `Sign` object that uses the given `algorithm`. On
recent OpenSSL releases, `openssl list-public-key-algorithms` will recent OpenSSL releases, `openssl list-public-key-algorithms` will
display the available signing algorithms. One example is `'RSA-SHA256'`. display the available signing algorithms. One example is `'RSA-SHA256'`.
### crypto.createVerify(algorithm) ### crypto.createVerify(algorithm)
<!-- YAML
added: v0.1.92
-->
Creates and returns a `Verify` object that uses the given algorithm. On Creates and returns a `Verify` object that uses the given algorithm. On
recent OpenSSL releases, `openssl list-public-key-algorithms` will recent OpenSSL releases, `openssl list-public-key-algorithms` will
display the available signing algorithms. One example is `'RSA-SHA256'`. display the available signing algorithms. One example is `'RSA-SHA256'`.
### crypto.getCiphers() ### crypto.getCiphers()
<!-- YAML
added: v0.9.3
-->
Returns an array with the names of the supported cipher algorithms. Returns an array with the names of the supported cipher algorithms.
@ -1061,6 +1237,9 @@ console.log(ciphers); // ['aes-128-cbc', 'aes-128-ccm', ...]
``` ```
### crypto.getCurves() ### crypto.getCurves()
<!-- YAML
added: v2.3.0
-->
Returns an array with the names of the supported elliptic curves. Returns an array with the names of the supported elliptic curves.
@ -1072,6 +1251,9 @@ console.log(curves); // ['secp256k1', 'secp384r1', ...]
``` ```
### crypto.getDiffieHellman(group_name) ### crypto.getDiffieHellman(group_name)
<!-- YAML
added: v0.7.5
-->
Creates a predefined `DiffieHellman` key exchange object. The Creates a predefined `DiffieHellman` key exchange object. The
supported groups are: `'modp1'`, `'modp2'`, `'modp5'` (defined in supported groups are: `'modp1'`, `'modp2'`, `'modp5'` (defined in
@ -1102,6 +1284,9 @@ console.log(alice_secret == bob_secret);
``` ```
### crypto.getHashes() ### crypto.getHashes()
<!-- YAML
added: v0.9.3
-->
Returns an array with the names of the supported hash algorithms. Returns an array with the names of the supported hash algorithms.
@ -1113,6 +1298,9 @@ console.log(hashes); // ['sha', 'sha1', 'sha1WithRSAEncryption', ...]
``` ```
### crypto.pbkdf2(password, salt, iterations, keylen[, digest], callback) ### crypto.pbkdf2(password, salt, iterations, keylen[, digest], callback)
<!-- YAML
added: v0.5.5
-->
Provides an asynchronous Password-Based Key Derivation Function 2 (PBKDF2) Provides an asynchronous Password-Based Key Derivation Function 2 (PBKDF2)
implementation. A selected HMAC digest algorithm specified by `digest` is implementation. A selected HMAC digest algorithm specified by `digest` is
@ -1146,6 +1334,9 @@ An array of supported digest functions can be retrieved using
[`crypto.getHashes()`][]. [`crypto.getHashes()`][].
### crypto.pbkdf2Sync(password, salt, iterations, keylen[, digest]) ### crypto.pbkdf2Sync(password, salt, iterations, keylen[, digest])
<!-- YAML
added: v0.9.3
-->
Provides a synchronous Password-Based Key Derivation Function 2 (PBKDF2) Provides a synchronous Password-Based Key Derivation Function 2 (PBKDF2)
implementation. A selected HMAC digest algorithm specified by `digest` is implementation. A selected HMAC digest algorithm specified by `digest` is
@ -1176,6 +1367,9 @@ An array of supported digest functions can be retrieved using
[`crypto.getHashes()`][]. [`crypto.getHashes()`][].
### crypto.privateDecrypt(private_key, buffer) ### crypto.privateDecrypt(private_key, buffer)
<!-- YAML
added: v0.11.14
-->
Decrypts `buffer` with `private_key`. Decrypts `buffer` with `private_key`.
@ -1194,6 +1388,9 @@ keys:
All paddings are defined in the `constants` module. All paddings are defined in the `constants` module.
### crypto.privateEncrypt(private_key, buffer) ### crypto.privateEncrypt(private_key, buffer)
<!-- YAML
added: v1.1.0
-->
Encrypts `buffer` with `private_key`. Encrypts `buffer` with `private_key`.
@ -1212,6 +1409,9 @@ keys:
All paddings are defined in the `constants` module. All paddings are defined in the `constants` module.
### crypto.publicDecrypt(public_key, buffer) ### crypto.publicDecrypt(public_key, buffer)
<!-- YAML
added: v1.1.0
-->
Decrypts `buffer` with `public_key`. Decrypts `buffer` with `public_key`.
@ -1233,6 +1433,9 @@ be passed instead of a public key.
All paddings are defined in the `constants` module. All paddings are defined in the `constants` module.
### crypto.publicEncrypt(public_key, buffer) ### crypto.publicEncrypt(public_key, buffer)
<!-- YAML
added: v0.11.14
-->
Encrypts `buffer` with `public_key`. Encrypts `buffer` with `public_key`.
@ -1254,6 +1457,9 @@ be passed instead of a public key.
All paddings are defined in the `constants` module. All paddings are defined in the `constants` module.
### crypto.randomBytes(size[, callback]) ### crypto.randomBytes(size[, callback])
<!-- YAML
added: v0.5.8
-->
Generates cryptographically strong pseudo-random data. The `size` argument Generates cryptographically strong pseudo-random data. The `size` argument
is a number indicating the number of bytes to generate. is a number indicating the number of bytes to generate.
@ -1289,6 +1495,9 @@ when generating the random bytes may conceivably block for a longer period of
time is right after boot, when the whole system is still low on entropy. time is right after boot, when the whole system is still low on entropy.
### crypto.setEngine(engine[, flags]) ### crypto.setEngine(engine[, flags])
<!-- YAML
added: v0.11.11
-->
Load and set the `engine` for some or all OpenSSL functions (selected by flags). Load and set the `engine` for some or all OpenSSL functions (selected by flags).

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